An FPGA implementation of real-time electro-optic & IR image fusion

Çölova, İbrahim Melih
In this thesis, a modified 2D Discrete Cosine Transform based electro-optic and IR image fusion algorithm is proposed and implemented on an FPGA platform. The platform is a custom FPGA board which uses ALTERA Stratix III family FPGA. The algorithm is also compared with state of the art image fusion algorithms by means of an image fusion software application GUI developed in Matlab®. The proposed algorithm principally takes corresponding 4x4 pixel blocks of two images to be fused and transforms them by means of 2D Discrete Cosine Transform. Then, the L2 norm of each block is calculated and used as the weighting factor for the AC values of the fused image block. The DC value of the fused block is the arithmetic mean of the DC coefficients of both input blocks. Based on this mechanism, the whole two images are processed in such a way that the output image is a composition of the processed 4x4 blocks. The proposed algorithm performs well compared to the other state of the art image fusion algorithms both in subjective and objective quality evaluations. In hardware, v the implemented algorithm can accept input videos as fast as 65 MHz pixel clock with a resolution of 1024x768 @60 Hz.


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Field Programmable Gate Arrays (FPGAs) are widely used in prototyping digital circuits. However commercial FPGAs are not very suitable for asynchronous design. Both the architecture of the FPGAs and the synthesis tools are mostly tailored to synchronous design. Therefore potential advantages of the asynchronous circuits could not be observed when they are implemented on commercial FPGAs. This is shown by designing an asynchronous arithmetic logic unit (ALU), implemented in the style of micropipelines, on th...
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A fluid dynamics framework for control of mobile robot networks
Paç, Muhammed Raşid; Erkmen, Aydan Müşerref; Department of Electrical and Electronics Engineering (2007)
This thesis proposes a framework for controlling mobile robot networks based on a fluid dynamics paradigm. The approach is inspired by natural behaviors of fluids demonstrating desirable characteristics for collective robots. The underlying mathematical formalism is developed through establishing analogies between fluid bodies and multi-robot systems such that robots are modeled as fluid elements that constitute a fluid body. The governing equations of fluid dynamics are adapted to multi-robot systems and a...
Citation Formats
İ. M. Çölova, “An FPGA implementation of real-time electro-optic & IR image fusion,” M.S. - Master of Science, Middle East Technical University, 2010.